rough playing

I am so sorry this is going to be long but I really really appreciate any and all help I can get. I have a 2 year old male German Shepherd named tucker. He is pretty well behaved and submissive. He always backs down towards other dogs and cries easily. We have always called him are little wimpy...

Hi everybody,
I'm the owner of a 1 and a half yo old pitbull mix. I found him on the streets when he was about 3 months old, very weak and with a broken leg. Once he recovered, for the next year or so he made my life a living hell. Biting, barking, peeing wherever, destroying every piece of...